John s



I (No Model.) J. S. CAMERON.- GAGE FUR PLOURING ROLLS, &c.

f No. 537,017. PtyntedApr. 9, 1895.

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JOHN S. CAMERON, OF EVANSVILLE, INDIANA, ASSIGNOR OF ONE-HALF TO ADDISONIGLEHEAR'I, OF SAME PLACE.

GAGE FOR FLOURlNG-ROLLS, 80C.

SPECIFICATION forming part of Letters Application filed .Tuly 26, 1894.Serial No. 518,607.

To all whom it may concern: I l

Be it known that I, JOHN S. CAMERON, a citizen of the United States,residing at Evansville, in the county of Vanderburg and State ofIndiana, have invented certain'new and useful Improvements in Gages forFlouring and other Rolls; and 'l do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the' art to which it appertains to to the accompanyingdrawings, and to the letters of reference marked thereon, which form apart of this specification.

This invention is directed to devices for gaging the relative positionsof the rolls of roller mills, and has for its object the production ofasimple but efcient gage for this purpose, which can be applied withequal facility to the under side or to the top of the rolls, and whetherthe latter are atrest or in motion, with aview to determining the degreeof vertical adjustability requisite for paralleling the same.

The nature of my invention will become apparent from a reading of thesnbjoined description when taken in connection with the accompanyingdrawings, which form a part of this specification, and in whichy Figurel is a plan View of my improved roll gage. Fig. 2 is a side elevation ofthe same. Fig. 3 is a vertical, central, sectional view. Fig. 4 is afront elevation showing the indicators in a different position. Fig. 5is a view showing a pair of rolls with my improved gage applied totheuinder side thereof, and Fig. 6 is a similar View showing the gageapplied to the upper side or top of said rolls.

Like letters of reference denote like parts in the several figures ofthedrawings.

Referring to the drawings by letter A denotes my improved gage, and B B.are the rolls which .latter are shown out of parallelism.

The gage consists essentially of two rods d a which are centrallyreduced at a to give a clearance for the Scrapers which are employed inconnection with smooth rolls, and which -rods are also recessed on theirinner sides to reduce the weight and add rigidity. The surfacesindicated at a2 a2 are planed Patent No. 537,017, dated April 9, 1895. v

(No model.)

Vare each centrally -apertured at a3 d3, for con- 55 nection with a kingbolt c which is provided with the reduced screw threaded ends c c forsaid apertures, nuts d d being employed to complete the connection. Therods are permitted to turn on said bolt, and for this 6o reason the boltis provided with collars c2 c2 which abut against the inner sides of therods, and the nuts are screwed up against the shoulders c3 formed by thereduced ends c', in order to prevent the binding of the rods between thecollars and nuts. In practice these rods are brought against theperipheries ot' a pair of rolls, and by reason of the loose connection,the surfaces a2 all contact with said peripheries whether the rolls arein' 7o parallelism or not, as will be understood by reference to Figs. 5and 6. The conformity of the rods with the relative position of therolls is accomplished automatically, in that any pressure on the kingbolt will causevthe rods, if the rolls are out of parallelism, to turnon said bolt until all four surfaces contact with the peripheries of therolls.

Any means for manipulating the gage may be employed, but I prefer to usea handle e 8o which is arranged parallel with the rods and connectedcentrally to the king bolt by a Vertical postor arm e. The connection ofthe handle with the gage being exactly central of the latter, it isevident that the gage is very 8 5 sensitive, and that the slightestvariation from parallelism of the rolls will be indicated, inasmuch asthe movements or adjustability of the two rods will be simultaneous, onebeing depressed and the other raised un- 9o til the contact is made atthe four points.

In order to adapt the gage for application to the upper side as well asthe under side of the rolls, I provide an indicator which is capable ofbeing secured to the rods in two positions, and which will show thedegree of adjustment requisite for paralleling the rolls. Said'indicatorconsists of two arms f f, which are bent inward at one end, f', to spanthe ends of the rods, and bent outward at their roo other ends to formindicator fingers f2 f2 which are arranged parallel to each other andextend in a direction opposite to the bent ends f. ln the ends of eachof the rods to which the indicator is secured are threaded perforationsg, g', g2, which are located respectively in the side, end and topthereof, the side perforation g receiving a thumb-screw h which is firstpassed through a slot f3in the end f of one of the indicator arms, theconnection of the other arm being made with the other rod in a similarmanner. This connection forms a pivotal joint which enables theindicator to be turned and secured in alignment with the rods as shownin Fig. 5, or at right angles thereto as shown in Fig. 6. h' h are thumbscrews which are passed through perforations f4f in the arms adjacent tothe bent ends f', and screwed into the apertures g to secure theindicator in alignment with the rods, or into the apertures g2 to securethe indicator at right angles to said rods. The indicator fingers areloosely secured together by means of a bolttwhich is passed through aslot i in one of said lingers and screwed into an aperture i2 in theother finger, this connection permitting each linger to follow themovement of the rod to which it is rigidly connected. The connection ofthe indicator with the rods, which permits of their relative positionbeing changed, is for the purpose of enabling the operator to apply thegage to the under side or to the upper side of the rolls, as conditionspermit, or in order to verify the indications. The gage aside from thisfeature, may be applied to rolls when at rest, or in motion, preferablyat the latter time, as I have found that there is always a perceptibledifference in the relative positions of the rolls when idle as comparedwith the active periods.

In practicing my invention, the indicator is secured in the positionrequired for the application, and the handle is brought against theperiphery of the rolls, and slight upward or downward pressure as thecase may be, being given the rods, are caused to adj ust themselves tothe positions of the rolls, the positions, and consequently the degreeof adjustment required, being shown by the indicators. This applicationof the gage may be made from above or below the rolls, it beingpreferred to make the double test in order to 5o prove the indication.

`The gage is as a whole very simple but yet eective. It is durable,light of weight, and may be cheaply produced and is very accurate inpractice.

I claim as my invention- 1. A gage for the rolls of roller millsconsisting of two rods loosely connected together, and adapted forcontact at four points on said rolls, and an indicator adapted to beremovably secured to said rods in different positions for the purposeset forth.

2. A gage for the rolls of roller mills consisting of two rods centrallyconnected but independently movable and adapted for contact at fourpoints on said rolls, and an indicator consisting of two arms eachpivotally connected toone end of each arm and adapted to be secured indierent positions with ret'- erence to the rods, said arms being looselyconnected together, all as and for the purposes set forth.

3. A gage for the rolls of roller mills consisting of two rods connectedtogether centrally by a king bolt, but independently movable, theindicator consisting of the two arms having the bent portions and theindicator ngers, apertures in the arms and ends of the rods, and thumbscrews for securing said rods and indicators in diderent relativepositions, for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

JNO. S. CAMERON.

Witnesses:

WILBUR ERsKINE, C. M. ToBrN.

